Rotes Rathaus is a subway station in Berlin's Mitte district. It is part of the extension of the U5 from Alexanderplatz to Brandenburger Tor, construction of which began with a groundbreaking ceremony in 2010. The station and the line opened simultaneously on 4 December 2020.

U5 is a line on the Berlin U-Bahn. It runs from Hauptbahnhof in Mitte eastwards through Alexanderplatz, Friedrichshain, Lichtenberg and Friedrichsfelde, surfaces in Biesdorf-Süd to pass Kaulsdorf and Hellersdorf above ground and finally reaches city limits at Hönow.